I believe you should review the speed of the wave the medium through which it is traveling and whether or not you have already been given all the information you need to answer.
about 1 hour. (nahsee)
An S-wave travels at 3.5 kilometers per second. If you have an S-wave traveling 6000 kilometers, it would take 1.7seconds.
9,000 miles
In a solid such as rock, the primary wave can travel at 5 km/sec; it would take 400 seconds, or about 6.7 minutes to travel 2,000 km. If traveling through water, the wave travels at about 1.45 km/sec and would need 1,379 seconds (23 minutes) to travel 2,000 km.
Sound travels at approximately 1500 m/s in water. So, it would take about 2 seconds for a sound wave to travel through 3000 m of water.
The speed of sound in water is approximately 1500 m/s. Therefore, it would take approximately 0.2 seconds for a sound wave to travel through 300 meters of water.
P-waves travel at speeds between 5 to 8 km/s, as such a P-wave may take between 812 and 1300 seconds (13 and 22 minutes respectively) to travel 6500 km. Please see the related question on P-wave velocity.
That depends a lot on the speed. Assume any appropriate speed, then divide the distance by the speed.
A primary wave (P-wave) can travel at an average speed of about 6 km/s through the Earth's crust. The distance between San Francisco, California, and Reno, Nevada, is approximately 350 km. Therefore, it would take around 58 seconds for a primary wave to travel from San Francisco to Reno.
Yes, that is correct. A wave will only travel as long as it has enough energy to propagate through the medium. Once the energy dissipates or is absorbed, the wave will stop propagating.
The radio waves from a lightning stroke travel at the speed of light, you can hear them as clicks on a long-wave radio, and they travel round the world in 1/7th of a second.
331 m/s